0
x2 - 8x = 1
∴ x2 - 8x + 16 = 17
∴ (x - 4)2 = 17
∴ x - 4 = ±√17
∴ x = 4 ± √17
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∙ 13y ago
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X2 8x 9 equals -7?
x=-1
X2 plus 8x equals -3x2 plus 5?
x2+8x = -3x2+5 4x2+8x-5 = 0 (2x+5)(2x-1) = 0 x = -5/2 or x = 1/2
X2 plus 8x-9 equals 0?
x2 + 8x - 9 = 0(x + 9) (x - 1) = 0(x + 9) = 0 . . . . . x = -9(x - 1) = 0 . . . . . x = 1
Solve this equation x2 - 8x plus 17 equals 0?
(4 ± i2) where i2 = -1
X2 plus 8x plus 10 equals 3?
(x+ 7)(x + 1) so x = -1 or -7
X2 8x 9 equals -7?
x=-1
X2 plus 8x equals -3x2 plus 5?
x2+8x = -3x2+5 4x2+8x-5 = 0 (2x+5)(2x-1) = 0 x = -5/2 or x = 1/2
X2 plus 8x-9 equals 0?
x2 + 8x - 9 = 0(x + 9) (x - 1) = 0(x + 9) = 0 . . . . . x = -9(x - 1) = 0 . . . . . x = 1
Solve this equation x2 - 8x plus 17 equals 0?
(4 ± i2) where i2 = -1
X2 plus 8x plus 10 equals 3?
(x+ 7)(x + 1) so x = -1 or -7
An equation of the axis of symmetry of the graph y equals -x2 plus 8x-7?
y = x2 + 8x - 7 a = 1, b = 8, c = -7 the equation of the axis of symmetry: x = -b/2a x = -8/(2*1) = -4
How do you factor x2-8x33?
If that's 8x33, the answer is -x2(8x31 - 1) If that's 8x3, the answer is -x2(8x - 1) If that's 8x - 33, the answer is (x - 11)(x + 3) If that's 8x + 33, the answer is irreducible. Proper notation is important.
What is the product of the roots of x2 - 8x plus 7 equals 0?
The roots are: x = 1 and x = 7 So: 7*1 = 7
What are the solutions for the quadratic equation 8x x2 - 9?
If you mean: x2+8x-9 = 0 then the solutions are x = 1 and x = -9
-8x plus 3y equals -5 8x - 2y equals 6?
(1, 1)
What does x²-8x-9 equal?
1
What are the possible values of k in the line y equals kx -2 which is tangent to the curve y equals x squared -8x plus 7?
The possible values for k are -2 and -14 because in order for the line to be tangent to the curve the discriminant must be equal to 0 as follows:- -2x-2 = x2-8x+7 => 6-x2-9 = 0 -14x-2 = x2-8x+7 => -6-x2-9 = 0 Discriminant: 62-4*-1*-9 = 0
